Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 487138486d8a205d…

MALICIOUS

PDF / .VIR

91.1 KB Created: 2021-04-02 08:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2024-04-28
MD5: b40ddfa381e57604ea4cb80ef7f44445 SHA-1: 443be7bd2e36ca3c6c7d9972276373d85882a4f1 SHA-256: 487138486d8a205da715bab0d1ca1b64cbefd4c44fbd698b2b0f81d2ee30f790
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gimoguvi.ru/123?utm_term=boles%25C5%2582aw+le%25C5%259Bmian+dusio%25C5%2582ek+pdf PDF link annotation
    • https://s3.amazonaws.com/kelukakeb/posejajurumuwowidibor.pdfIn PDF document text
    • http://pay-order.info/how_to_replace_door_boot_on_maytag_neptune_washer1jivh.pdfIn PDF document text
    • http://sehq.xyz/86766082419fuxz7.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/ableton_live_9_suite_tutorial.pdfIn PDF document text
    • http://vclean-sale.shop/93075312637on37c.pdfIn PDF document text
    • http://insta-sale.site/kubegi7un8k.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/gelutizakefinotaziv.pdfIn PDF document text
    • http://meetsoda.club/what_color_is_the_license_plate_sticker_for_2020_californiaxm5xx.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/elements_of_music_3rd_edition_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/college_english_placement_test_practice_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/dhl_international_waybill_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/faded_roblox_piano_sheet_music.pdfIn PDF document text
    • http://20970907.net/vuzewabojuwivcf9pe.pdfIn PDF document text
    • http://fabermanufacture.ru/789761991890lv14.pdfIn PDF document text
    • http://smartradiobf.ru/viturudisejinusebokukaxl1qo.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/saxuwubasifepawisore.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/garatawi.pdfIn PDF document text
    • http://criticcxck.space/pinapufipjliy.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00011691.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00011691.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00014f86.bin)
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off00011691.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11691 5356 bytes
SHA-256: d14177e5752140d4f8a2e16dc602480a385ca5b24853c1f9b6c236ee60cbf14c
font_01_sfnt_off00012853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12853 12500 bytes
SHA-256: 206d59a6220f9365122d8b6bb901a3c3ad5b07454fbb3c20ae4445804b54c351
font_02_sfnt_off00014f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F86 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333